Yes, Japan has waited too long to send a prime minister to Pearl Harbor. The attack on American troops that occurred at Pearl Harbor in 1941 was a terrible atrocity that needs to be recognized. It is good that the prime minister decided to visit this site, but it should have happened earlier.
It was a nice gesture of Japan to finally have someone go to Pearl Harbor. Americans still remember the attack on Pearl Harbor. Many Americans lost family members or generations forever because of the attack. Having someone visit is a sign that Japan is ready to acknowledge the past and move towards the future.
Using horrible past events is a great way to remind people to try their hardest to keep modern peace in areas that are currently peaceful. Japan has left it a very long time and that is a big shame. The Japanese Prime Minister, Shinzo Abe, is saying all the right things in terms of reconciliation but a question should be asked why it's only being done now.
Also, earlier this year, Obama became the first sitting U.S. president to visit Hiroshima Peace Memorial Park, where he laid a wreath at a monument to those killed when the U.S. dropped atomic bombs on Hiroshima and Nagasaki. 'History is harsh. What is done cannot be undone, so we can say they both done the right thing.